Children with the Polonia Ensemble hold hands as they walk during the 70th annual Columbus Day Parade on Oct. 10, 2022, in downtown Chicago. (Michael Blackshire / Chicago Tribune) As the sound of a flute played in Pottawattomie Park on Monday, three people began shouting over the Native song. A divide within the Native American community of Chicago took center stage in Rogers Park at what was meant to be a celebration and news conference hosted by the Indigenous Peoples Day Coalition-Illinois. The coalition, made up of 195 organizations and businesses across cultures, faith traditions and neighborhoods, intended to call...